As one of the former big proponents of Vitamin E, I was disappointed to learn that it does not have all of the healthy impacts I had heard. I just ran across this information that came out a few days ago.
Eight years ago, results from a landmark cancer prevention trial run by SWOG, a National Cancer Institute supported organization, showed that a daily dose of vitamin E and selenium did not prevent prostate cancer. In fact, the Selenium and Vitamin E Cancer Prevention Trial (SELECT) showed that vitamin E supplementation increased the risk of prostate cancer in healthy men.
Now, a SWOG review of ancillary SELECT results definitively shows that these two antioxidants also don’t prevent colorectal adenomas – polyps that are the premalignant precursors to most colorectal cancers. Results are published in Cancer Prevention Research.
“The message to the public is this: Vitamin E and selenium will not prevent colorectal adenomas, which are surrogates for colorectal cancer,” said Dr. Peter Lance, lead author of the journal article and deputy director of the University of Arizona Cancer Center. “We have no evidence that these supplements work to prevent cancer.”
Despite the billions spent in the United States each year on vitamin supplements, there is scant evidence they prevent cancer. According to the National Cancer Institute, which funds SWOG through its National Clinical Trials Network (NCTN) and NCI Community Oncology Research Program (NCORP), results from nine randomized trials did not provide evidence that antioxidant supplements are beneficial in primary cancer prevention. An in-depth review conducted for the United States Preventive Services Task Force likewise found no clear evidence of benefit. Continue reading